Image tool

Image Resizer

Resize images to exact dimensions while optionally preserving aspect ratio.

Practical guide

How to use Image Resizer

Image Resizer creates a new image at exact pixel dimensions. It is useful for thumbnails, profile images, CMS limits, email assets, and responsive-image preparation.

Step by step

  1. Choose an image and review its original dimensions.
  2. Enter a new width or height and keep aspect ratio enabled unless intentional stretching is required.
  3. Select a format, resize, inspect the preview, and download the result.

Example

Input2400 × 1600 image resized to 1200 px wide
Result1200 × 800 image when aspect ratio is preserved

How it works

The source is decoded and redrawn onto a Canvas with high-quality image smoothing. The new canvas is then encoded as PNG, JPEG, or WebP.

Important limitations

  • Enlarging an image cannot recreate detail absent from the source.
  • Very large output dimensions are limited to protect memory and browser stability.

Frequently asked questions

Why did the height change when I edited width?

Keep aspect ratio calculates the matching dimension to prevent stretching.

Does resizing remove metadata?

Canvas re-encoding normally drops original metadata; use Metadata Remover when that is the explicit goal.

Color Spectrum Extract dominant colors, inspect pixels, and export palettes from an image. Image Compressor Reduce image file size locally with an adjustable quality setting. Image Format Converter Convert images between PNG, JPEG, and WebP entirely in the browser.